Understanding Fivefold Symmetry in Electron-Diffraction Patterns
Understanding Fivefold Symmetry in Electron-Diffraction Patterns
Electron-diffraction patterns with 5-fold rotational symmetry of experimental alloy phases areassumed to be produced by periodic structures. Two three-dimensional periodic structures arepresented based on two kind polyhedrons. These structures can be used as two atomic models todescribe the alloy phases. The Fourier-transform patterns of the model are simulated along six“symmetry directions”. The chemical composition of the model is similar to that of the Al-Mnalloy phase. Details of the motivations and approaches that lead to these models are discussed.This study suggests that non classical periodic structures are also well candidates to describequasicrystals.
Electron-diffraction patterns with 5-fold rotational symmetry of?experimental alloy phases are assumed to be produced by periodic?structures. Two three-dimensional periodic structures are presented?based on ?two kind ?polyhedrons. These structures can be used as two?atomic models to describe the alloy phases. ?The Fourier-transform?patterns of the model are simulated along six symmetry?directions. ? ?The chemical composition of the model is similar to?that of the Al-Mn alloy phase. Details of the motivations and?approaches that lead to these models are discussed. This study?suggests that non classical periodic structures are also well?candidates to describe quasicrystals .
Min Lequan
晶体学物理学材料科学
ondensed matter physicsElectron-diffraction5-fold symmetryQuasicrystalRegular pentagonal dodecahedronsPeriodic modelsFourier-transform patterns.
ondensed matter physicsElectron-diffraction5-fold symmetryQuasicrystalTwo kind polyhedronsTwo Periodic modelsFourier-transform patterns .
Min Lequan.Understanding Fivefold Symmetry in Electron-Diffraction Patterns[EB/OL].(2024-09-23)[2025-08-02].https://chinaxiv.org/abs/202403.00361.点此复制
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